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The hydrogen internal combustion engine is already considered zero-emissions technology in the European market, and interest in the North American market is increasing.

Speakers and exhibitors at the 2025 Advanced Clean Transportation Expo illustrated a growing interest in cleaner-burning and renewable fuels for the internal combustion engine.

Mack Trucks pulled back the curtain April 29 on plans to launch a battery-electric version of the Volvo Group division’s recently unveiled flagship on-highway Class 8 tractor, the Pioneer.

Hyundai Motor Co. unveiled the latest iteration of its Class 8 Xcient hydrogen fuel cell electric tractor April 28, overhauling the powertrain, safety systems and driver comforts.

Clarios has released a battery-monitoring technology, IdleLess, that provides real-time insights on heavy-duty vehicles while reducing fuel consumption and emissions.

Hydrogen trucks cost more than diesel models, but autonomous driving capabilities could double the utilization of those vehicles and improve the total cost of ownership calculation.

The new model is a battery-electric vehicle equipped with a gasoline-powered range extender that charges the battery when needed, enabling a range of up to 500 miles between charges.

The models were unveiled April 14 at a media preview at Texas Motor Speedway in advance of the trucks’ official debut April 28 at the Advanced Clean Transportation Expo.

Kenworth launched a revamped version of the battery-electric configuration of its T680 tractor April 28 at the 2025 Advanced Clean Transportation Expo in Anaheim, Calif.

The startup conducted a variety of driverless safety tests with its SuperDrive autonomous driving system installed on an International LT Series Class 8 tractor in East Liberty, Ohio.